vs SATA: Which Is the Best for You?

2 specification supports NVM Express as the logical device interface for PCI Express SSDs, in addition to supporting legacy Advanced Host Controller

PCIe, is a standard interface used for connecting high-speed motherboard components while NVMe is the communication protocol or interface

nvme in pcie slot 2 will disable a couple of SATA ports because the slot is sharing PCIe lanes with those SATA ports If you were to get a PCIe SSD, it would

nvme m2 ssd slot 2 is a form factor specification for internally mounted SSDs Formerly known as Next Generation Form Factor , supports PCIe, SATA and USB interfaces